Electrical measurements MCQ Quiz Hub

Digital Communications MCQs set-17

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1. Which has comparatively high frequency component?




2. Which has continuous transmission?




3. Which requires bit transitions?




4. In synchronous transmission, receiver must stay synchronous for




5. How error detection and correction is done?




6. Which can detect two bit errors?




7. CRC uses




8. Which needs re-sending of signal?




9. Which needs more check bits?




10. Which gets less affected by noise?




11. Which is used to protect privacy of the information?




12. Digital signals are easy for




13. Which are forward error correcting codes?




14. Which operates on continuous stream of data?




15. Which is more complex?




16. Which has better minimum distance?




17. In symmetric key cryptosystem, who knows the key?




18. While recovering signal, which gets attenuated more?




19. Mutual information should be




20. ASCII code is a




21. Which reduces the size of the data?




22. In digital image coding which image must be smaller in size?




23. Which coding method uses entropy coding?




24. Which achieves greater compression?




25. A code is a mapping from




26. Which are uniquely decodable codes?




27. A rate distortion function is a




28. Interpolation is done by




29. Interpolation provides a mean for estimating functions




30. Interpolation methods are




31. Linear interpolation is




32. Error is equal to




33. Which produces smoother interpolants?




34. Which is more expensive?




35. Gaussian process is a _____ interpolation process.




36. Interpolation means




37. Interpolation is a method of




38. Self information should be




39. The unit of average mutual information is




40. When probability of error during transmission is 0.5, it indicates that




41. Binary Huffman coding is a




42. The event with minimum probability has least number of bits.




43. The method of converting a word to stream of bits is called as




44. When the base of the logarithm is 2, then the unit of measure of information is




45. When X and Y are statistically independent, then I (x,y) is




46. The self information of random variable is




47. Entropy of a random variable is




48. Which is more efficient method?




49. Lempel-Ziv algorithm is




50. Coded system are inherently capable of better transmission efficiency than the uncoded system.